I won't go into too much of the plot details as others here have covered that well. I really enjoyed this film. I've watched it a couple of times now and while I understand there are some flaws, overall I felt it was really enjoyable watching.

Lau Ching Wan is very good here which is no surprise for one of the most underated actors ever. What makes him great is his ability to get whatever emotion he want to come across without overacting which we see so often from others. I never thought of Wu Chien-Lien as a great actress but this was her finest performance I've seen.

Visually this film sets itself apart from many others in the genre. Beautifully shot, with a blue tinge I'm guessing to symbolize the cold-hearted nature of Wu's character, and of course the movie's title.

The action scenes are intense and very violent. Some complain that some of it was over-done but not anymore so than one of John Woo's manic scenes(which I love too). I admit, the ending didn't cut it for me, but that didn't take away the pleasure I had while viewing this. I especially liked the opening scene, as it was something you would almost never see from a Hollywood production.

I recommended this to any fan of the HK gun-play action films. While this isn't a John Woo masterpiece, it still delivers on a couple of levels.